Vtech 2151 Cordless Phone Battery 1X3-2/3AA/D - 3.6 Volt, Ni-MH 750mAh - Replacement Battery by EMPIRE Replacement Battery for Rechargeable - Ni-MH 1X3-2/3AA/D, 3.6 Volt, 750 mAh. 100% compatible with your OEM battery - 3 year warranty. Made with high quality Japanese cells. Synergy Digital is a Registered Trademark